Question

1. Simplify the following:
(x-2y) (y - 3x) + (x + y) (x - 3y) - (y - 3x) (4x - 5y)​

Answer 1

=xy-3x²-2y²+6xy+x²-3xy+xy-3y²-4xy+5y²+12x²-15xy

=-14xy+10x²

Answer 2

Step-by-step explanation:

x(y-3x)-2y(y-3x)+x(x-3y)+y(x-3y)-y(4x-5y)-3x(4x-5y)

=xy-3xy-2y×y+6xy+x×x-3xy+xy-3xy-4xy+5y×y-12x×x+15xy

=10xy+3y×y-11x×x